DE3728961C2 - - Google Patents
Info
- Publication number
- DE3728961C2 DE3728961C2 DE19873728961 DE3728961A DE3728961C2 DE 3728961 C2 DE3728961 C2 DE 3728961C2 DE 19873728961 DE19873728961 DE 19873728961 DE 3728961 A DE3728961 A DE 3728961A DE 3728961 C2 DE3728961 C2 DE 3728961C2
- Authority
- DE
- Germany
- Prior art keywords
- pump
- cylinder head
- plane
- internal combustion
- solenoid valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
- F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung bezieht sich auf eine aus Pumpe und Düse bestehende magnetventilgesteuerte Einspritzvorrichtung für mehrzylindrige Brennkraftmaschinen nach dem Oberbe griff des Patentanspruchs 1.The invention relates to a pump and nozzle existing solenoid-controlled injection device for multi-cylinder internal combustion engines according to the Oberbe handle of claim 1.
Eine derartige magnetventilgesteuerte Einspritzvorrichtung ist aus der GB 21 31 873 A bekannt. Diese Einspritzvor richtung besteht aus einer Pumpe-Düse, die gemeinsam mit dem Magnetventil eine Baueinheit bildet und am Zylinderkopf auf der Saugseite als Ganzes demontierbar befestigt ist.Such a solenoid valve-controlled injection device is known from GB 21 31 873 A. This injection pre direction consists of a pump nozzle, which together with the Solenoid valve forms a structural unit and on the cylinder head is detachably attached as a whole on the suction side.
Der Erfindung liegt die Aufgabe zugrunde, Maßnahmen an einer magnetventilgesteuerten Einspritzvorrichtung zu er greifen, die bei engen Platzverhältnissen im Motorraum eine gut zugängliche platzsparende Unterbringungsmöglichkeit ge statten, die ferner einen raschen Aus- und Einbau der Düse oder des Magnetventiles und der Pumpe zuläßt. The invention has for its object measures a solenoid-controlled injector grab a tight space in the engine compartment easily accessible space-saving accommodation ge which also allow for rapid removal and installation of the nozzle or the solenoid valve and the pump allows.
Die Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale gelöst.The task is characterized by the characterizing part of claim 1 specified features solved.
Die erfindungsgemäß getroffenen Maßnahmen erlauben einen getrennten Ausbau von Pumpe und Düse als gegenüberliegende Bauteile am Zylinderkopf. Zudem wird der Ausbau noch dadurch erleichtert, daß Pumpe, Düse und Magnetventil außerhalb der Zylinderkopfhaube angeordnet sind, wodurch sich geringere thermische Belastungen ergeben. Außerdem sind relativ ein fache elektrische Anschlüsse am Magnetventil ohne auf wendige Abdichtungen verwendbar.The measures taken according to the invention allow one Separate removal of pump and nozzle as opposite Components on the cylinder head. In addition, the expansion will still be relieved that pump, nozzle and solenoid valve outside the Cylinder head cover are arranged, which is less result in thermal loads. They are also relatively one fold electrical connections on the solenoid valve without agile seals can be used.
Ein weiterer Vorteil ergibt sich noch durch die direkte Zentrierung und Fixierung der Pumpe am Zylinderkopf, so daß sie geringeren mechanischen und hydraulischen Belastungen ausgesetzt ist.Another advantage is the direct centering and fixation of the pump to the cylinder head, so that it is less mechanical and exposed to hydraulic loads.
Aus der DE-PS 6 94 245 ist zwar eine im Zylinderkopf be festigte Pumpe bekannt, die räumlich von der auf gleicher Seite liegenden Düse getrennt ist, der Ausbau der schräg kantengesteuerten Pumpe ist jedoch erschwert, da nicht nur die Zylinderkopfhaube demontiert, sondern auch das mechanische Reguliergestänge für die Einspritzmengenregelung von der Pumpe gelöst werden muß.From DE-PS 6 94 245 is a be in the cylinder head solidified pump known spatially from the same on Side nozzle is separated, the expansion of the oblique edge-controlled pump is difficult, however, because not only dismantled the cylinder head cover, but also the mechanical Control linkage for the injection quantity control from the pump must be solved.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments of the invention are can be found in the subclaims.
In der Zeichnung ist ein Ausführungsbeispiel dargestellt und im folgenden näher beschrieben. Es zeigtAn exemplary embodiment is shown in the drawing and described in more detail below. It shows
Fig. 1 den oberen Teil einer Brennkraftmaschine mit magnetventilgesteuerter Einspritzvor richtung im Schnitt, Fig. 1 shows the upper part of an internal combustion engine having solenoid-valve-controlled Einspritzvor direction in section,
Fig. 2 eine Draufsicht auf die Brennkraftmaschine ohne Zylinderkopfhaube. Fig. 2 is a plan view of the internal combustion engine without a cylinder head cover.
Eine magnetventilgesteuerte Einspritzvorrichtung 1 für mehrzylindrige Brennkraftmaschinen, auch für solche mit vier Gaswechselventilen pro Zylinder, setzt sich im wesentlichen aus einem in Abhängigkeit von Betriebs parametern der Brennkraftmaschine arbeitenden Magnet ventil 2, einer mit diesem eine Baueinheit bildenden Pumpe 3 und einer von der Pumpe 3 räumlich getrennten Düse 4 zu sammen, die durch eine freiliegende Druckleitung 5 mitein ander verbunden sind.A solenoid valve-controlled injection device 1 for multi-cylinder internal combustion engines, also for those with four gas exchange valves per cylinder, is composed essentially of a magnetic valve 2 working as a function of operating parameters of the internal combustion engine, a pump 3 forming a structural unit with it and one of the pump 3 spatially separate nozzle 4 together , which are connected to each other by an exposed pressure line 5 .
Die Pumpe 3 ist als Steckeinheit in einer Aufnahmebohrung 6 im Zylinderkopf 7 abgasseitig demontierbar befestigt und wird von einem Antriebsnocken 8 einer Nockenwelle 9, welche auch Steuernocken 10 für die Betätigung der Gaswechsel ventile 11 aufweist, über ein als Rollenstößel ausgebildetes Antriebselement 12 angetrieben. Ein mit dem Rollenstößel fest verbundener Pumpenkolben 13 ist im Pumpengehäuse 14 längsverschiebbar geführt und fördert Kraftstoff nach Ab steuerung einer Kraftstoffzuführleitung 15 aus dem Pumpen arbeitsraum 16 über steuerbare Leitungen im Magnetventil 2 und über die freiliegende Druckleitung 5 zu der ansaug seitig im Zylinderkopf 7 demontierbar befestigten Düse 4. The pump 3 is fastened as a plug-in unit in a receiving bore 6 in the cylinder head 7 on the exhaust side and is driven by a drive cam 8 of a camshaft 9 , which also has control cams 10 for actuating the gas exchange valves 11 , via a drive element 12 designed as a roller tappet. A pump piston 13 firmly connected to the roller tappet is guided in the pump housing 14 so as to be longitudinally displaceable and delivers fuel after control of a fuel supply line 15 from the pump work chamber 16 via controllable lines in the solenoid valve 2 and via the exposed pressure line 5 to the nozzle in the cylinder head 7 which can be dismantled and fastened 4th
Die Pumpe 3 liegt in ihrer Längserstreckung in einer quer zur Längsmittelebene "a" der Brennkraftmaschine zwischen zwei benachbarten Zylindern 18 und 19 verlaufenden Ebene "b", in der auch die Druckleitung 5 auf kürzestem Wege von der Abgas- bis zur Ansaugseite nah über der Zylinderkopfhaube 17 geführt verläuft.The pump 3 lies in its longitudinal extension in a plane "b" running transversely to the longitudinal center plane "a" of the internal combustion engine between two adjacent cylinders 18 and 19, in which plane the pressure line 5 also runs in the shortest possible way from the exhaust gas side to the intake side close above the cylinder head cover 17 runs.
Die Düse 4 ist dabei zur Pumpe 3 versetzt angeordnet, so daß die Druckleitung 5 ansaugseitig seitwärts geschwungen zur Düse führt.The nozzle 4 is arranged offset to the pump 3 , so that the pressure line 5 leads to the nozzle on the suction side, swinging sideways.
Die abgasseitige Anschlußstelle der Druckleitung 5 ist durch einen Flansch 20 am Magnetventil 2 gebildet, über den die Pumpe 3 als Steckeinheit mit dem Zylinderkopf 7 durch Schrauben 21, 22 fest verbunden ist. Die in Fig. 1 gezeigte Brennkraftmaschine ist schräg eingebaut,und zwar ist die Zylinderachse um ca. 15° geneigt gegenüber der Senkrechten angeordnet.The exhaust-side connection point of the pressure line 5 is formed by a flange 20 on the solenoid valve 2 , via which the pump 3 as a plug-in unit is firmly connected to the cylinder head 7 by screws 21 , 22 . The internal combustion engine shown in Fig. 1 is installed obliquely, namely the cylinder axis is inclined by approximately 15 ° to the vertical.
Um das Magnetventil 2 keinen zu hohen thermischen Belastungen auszusetzen, ist die Teilungsebene "x" zwischen Zylinderkopf 7 und Zylinderkopfhaube 17 gegenüber der Teilungsebene "Y" zwischen Zylinderkopf 7 und Kurbelgehäuse 23 um ca. 15° ge neigt angeordnet, d.h. die Teilungsebene "x" liegt in der Horizontalebene, um einen möglichst großen Abstand zum Ab gaskrümmer 24 zu erhalten. Die Aufnahmebohrung 6 für die Pumpe 3 befindet sich dagegen so nah wie möglich am oberen abgasseitigen Zylinderkopfrand 7 a, um eine kurze Druck leitung 5 zu verwirklichen. In order not to expose the solenoid valve 2 to excessive thermal loads, the parting plane "x" between the cylinder head 7 and the cylinder head cover 17 is arranged inclined by approximately 15 ° relative to the parting plane "Y" between the cylinder head 7 and the crankcase 23 , ie the parting plane "x" lies in the horizontal plane in order to obtain the greatest possible distance from the exhaust manifold 24 . The receiving bore 6 for the pump 3 , on the other hand, is as close as possible to the upper exhaust-side cylinder head edge 7 a in order to realize a short pressure line 5 .
Wie aus Fig. 2 ersichtlich, liegt die Achse der Nocken welle 9 in der Teilungsebene "x", die Pumpe 3 und das im 90° Winkel zur Teilungsebene "y" angeordnete Gaswechsel ventil 11 schließen einen spitzen Winkel von annähernd 75° ein. Pumpe 3 sowie Magnetventil 2 sind zueinander recht winklig angeordnet. Die Anordnungen und Zuordnungen ergeben eine platzsparende kompakte Bauweise. Der rasche Aus und Einbau der Pumpe oder Düse bleibt dabei unbeeinträchtigt. Die Einspritzvorrichtung 1 ist servicefreundlich. Von be sonderem Vorteil ist, daß durch den besonderen Aufbau der Einspritzvorrichtung 1 die Bauhöhe der schräg eingebauten Brennkraftmaschine nicht verändert wird, da die Druck leitung 5 höhenmäßig nicht über das Kettenantriebsrad (nicht dargestellt) hinausragt.As can be seen from FIG. 2, the axis of the cam shaft 9 lies in the division plane "x" , the pump 3 and the gas exchange valve 11 arranged at a 90 ° angle to the division plane "y" include an acute angle of approximately 75 °. Pump 3 and solenoid valve 2 are arranged at right angles to each other. The arrangements and assignments result in a space-saving, compact design. The quick removal and installation of the pump or nozzle remains unaffected. The injection device 1 is easy to service. Of particular advantage is that the height of the inclined internal combustion engine is not changed by the special structure of the injector 1 , since the pressure line 5 does not protrude in height over the chain drive wheel (not shown).
Claims (3)
daß eine Aufnahmebohrung (6) für die Pumpe (3) im Zylinderkopf (7) abgasseitig über dem Abgaskrümmer (24) derart angebracht ist daß die Pumpe (3) einen wesentlich geringeren Abstand zur Teilungsebene (x) zwischen Zylinderkopfhaube (17) und dem Zylinderkopf (7) als zum Abgaskrümmer (24) aufweist,
daß die Achse der Pumpe (3) in der zwischen zwei benachbarten Zylindern (18, 19) verlaufenden Ebene (b) liegt und
daß die getrennt von Pumpe (3) und Magnetventil (2) auf der Ansaugseite im Zylinderkopf (7) befestigte Düse (4) über die freiliegende Druckleitung (5), die auf kürzestem Wege nahe über der Zylinderkopfhaube (17) verläuft, mit der Pumpe (3) verbunden ist.1. consisting of pump and nozzle solenoid-controlled injection device for multi-cylinder internal combustion engines, in which the pump and the solenoid valve are combined to form a structural unit, the axis of the pump lying in a plane running perpendicular to the longitudinal center plane of the internal combustion engine and the pump piston being guided in the pump housing in a longitudinally displaceable manner by a drive cam Cams mounted on the cylinder head side and control cams for the gas exchange valves are actuated via a drive element and fuel when a fuel supply line opening into the pump work space is shut off via the solenoid valve controlling the start and end of delivery depending on operating parameters of the internal combustion engine through a pressure line to the nozzle attached in the cylinder head on the intake side promotes, characterized,
that a receiving bore ( 6 ) for the pump ( 3 ) in the cylinder head ( 7 ) is mounted on the exhaust gas side above the exhaust manifold ( 24 ) in such a way that the pump ( 3 ) has a substantially smaller distance from the parting plane (x) between the cylinder head cover ( 17 ) and the cylinder head ( 7 ) than to the exhaust manifold ( 24 ),
that the axis of the pump ( 3 ) lies in the plane (b) extending between two adjacent cylinders ( 18, 19 ) and
that the nozzle ( 4 ) attached separately from the pump ( 3 ) and solenoid valve ( 2 ) on the suction side in the cylinder head ( 7 ) via the exposed pressure line ( 5 ), which runs in the shortest possible way close to the cylinder head cover ( 17 ), with the pump ( 3 ) is connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873728961 DE3728961A1 (en) | 1987-08-29 | 1987-08-29 | Solenoid valve-controlled injection device comprising pump and nozzle, for multi-cylinder internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873728961 DE3728961A1 (en) | 1987-08-29 | 1987-08-29 | Solenoid valve-controlled injection device comprising pump and nozzle, for multi-cylinder internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3728961A1 DE3728961A1 (en) | 1989-03-09 |
DE3728961C2 true DE3728961C2 (en) | 1990-12-06 |
Family
ID=6334822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19873728961 Granted DE3728961A1 (en) | 1987-08-29 | 1987-08-29 | Solenoid valve-controlled injection device comprising pump and nozzle, for multi-cylinder internal combustion engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3728961A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4227853A1 (en) * | 1992-08-22 | 1994-02-24 | Bosch Gmbh Robert | Fuel injection pump for internal combustion engines |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4227851A1 (en) * | 1992-08-22 | 1994-02-24 | Bosch Gmbh Robert | Fuel injection pump for internal combustion engines |
EP0671560B1 (en) * | 1994-03-12 | 1998-04-08 | Adam Opel Ag | Cylinder head assembly of a diesel engine with a holding device for a fuel injection valve as well as a holding device for an individual injection pump acting on that fuel injection valve |
US5749717A (en) * | 1995-09-12 | 1998-05-12 | Deisel Technology Company | Electromagnetic fuel pump for a common rail fuel injection system |
DE19857555A1 (en) * | 1998-12-14 | 2000-06-15 | Bayerische Motoren Werke Ag | Internal combustion engine with direct fuel injection and externally supplied ignition has single cylinder high pressure fuel pump installed on side of cylinder head and operated by longitudinally movable cam follower |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE694245C (en) * | 1935-04-11 | 1940-07-27 | Junkers Flugzeug -und Motorenwerke Akt.-Ges. in Dessau. | Arrangement of the injection pumps of internal combustion engines |
DE911560C (en) * | 1951-09-26 | 1954-05-17 | Cav Ltd | Injection nozzle for liquid fuel |
AT239604B (en) * | 1962-05-30 | 1965-04-12 | Hans Dipl Ing Dr Techn List | Air-cooled injection internal combustion engine |
GB2131873A (en) * | 1982-12-16 | 1984-06-27 | Ford Motor Co | Internal combustion engine with fuel injector and pump units |
-
1987
- 1987-08-29 DE DE19873728961 patent/DE3728961A1/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4227853A1 (en) * | 1992-08-22 | 1994-02-24 | Bosch Gmbh Robert | Fuel injection pump for internal combustion engines |
Also Published As
Publication number | Publication date |
---|---|
DE3728961A1 (en) | 1989-03-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8363 | Opposition against the patent | ||
8330 | Complete disclaimer |